Has an AFL game ever ended 123-104?
Exactly once. On June 23, 1990, Carlton beat Geelong 123-104, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 123-104 in league history.
That makes 123-104 the 3884th most common final score out of 6,649 that have ever occurred in AFL. One point away, 124-104 has happened 3 times and 123-105 has happened 1 times.